<!DOCTYPE html>
<html lang="en">
  <head>
    <title>Document</title>
    <script src="https://cdn.jsdelivr.net/npm/vue"></script>
  </head>
  <body>
    <div id="app">{{message}}</div>
    <script type="text/javascript">
      var app = new Vue({
        el: "#app",
        data: {
          message: "Hello Vue!",
        },
      });
    </script>
  </body>
</html>